Which element is oxidized in this reaction? Enter the chemical symbol of the element. 2CuO+C2Cuu+CO2 View Available Hint(s) t B Complete previous part(s) Part C Which element is reduced in this reaction? Cr2O72+3HNO2+5H++2Cr31+3NO3+4H2O Enter the chemical symbol of the element. Carbon can have many different oxidation states in its compounds. What is the oxidation state of CinCH4 ? What is its oxidation state in CO2 ? View Available Hint(s) 4;+4 2i+2 0,0 +4. 4 Part B What is the oxidation state of manganese, Mn, in the pemanganate polyatomic ion, MnO4 ? Viow Available Hint(s) Which element is being reduced in the following redox reaction? 5Fe2+(aq)+8H+(aq)+MnO4(aq)Mn2(aq)+4H2O(p)+5Fe3+(aq) View Available Hint(s) Mn 0 Fe